• Enhanced Thermal Model including current unbalance and RTD biasing • Temperature monitoring with programmable RTD inputs for Stator, Bearing and Ambient temperature protection • Reduce troubleshooting time and maintenance costs -motor running and learned data, last trip data Cost Effective Access to information through standard RS485 serial ports using Modbus RTU Field upgradable settings and firmware Installation flexibility - Remote display and drawout case options • Simplify testing - Built in simulation features Protection and Control • Thermal model biased with RTD and negative sequence current feedback • Stator winding & bearing overtemperature • Motor multiple starts • 8 standard overload curves • User defined overload FlexCurve™ • Undercurrent for load loss • Locked rotor • Rapid trip/mechanical jam • Unbalance/single phasing • Short circuit • Ground fault • Phase reversal (meter option) • Variable lock-out time • Latched main trip relay, alarm relay • 2 auxiliary relays • Emergency restart capability • Pre-trip alarm warnings Monitoring and Metering • Current & Thermal Capacity metering • Data Logger • Learned & Statistical Data • Optional voltage, power metering Inputs and Outputs • 12 RTDs, programmable • 5 factory programmed digital inputs • 4 output relays • 1 programmable analog output EnerVista™ Software • State of the art software for configuration and commissioning GE Multilin products • Document and software archiving toolset to ensure reference material and device utilities are up-to-date • EnerVista™ Integrator providing easy integration of data in the 269 Plus into new or existing monitoring and control systems

269 Plus Motor Protection System A smooth custom overload curve is created within a selected range using FlexCurve™. This curve can be used to protect motors 52 50 50G with different rotor damage and stator 4160V BUS Functional Block Diagram The undercurrent function is used to detect a decrease in motor current caused by a decrease in motor load. This is especially useful for indication of conditions such as loss of suction for pumps, loss of airflow for fans, or a broken belt for conveyors. A separate undercurrent alarm level may be set to provide early warning. Ground Fault For zero sequence...

269 Plus Motor Protection System 6500 HP 13800 Volt INDUCED DRAFT FAN MOTOR , 10000 1 PROGRAMMED 269 Plus CUSTOM CURVE 2 RUNNING SAFETIME (ROTOR LIMITED) 3 ACCELERATION SAFETIME (ROTOR LIMITED) 4 MOTOR CURRENT @ 100% VOLTAGE 5 MOTOR CURRENT @ 80% VOLTAGE MULTIPLE OF FULL LOAD CURRENT SETPOINT To learn the cooldown time, the 269 Plus tracks the stator RTD temperature and calculates the rate of cooling. If an ambient air RTD is also used, the relay uses this value in its calculation. The learned accelerating I 2t value is obtained by measuring actual inrush currents and acceleration time. This...

269 Plus Motor Protection System VFD Applications The 269 Plus is capable of protecting motors fed from variable frequency drives (VFDs), including pulse width modulated (PWM) drives. The 269 Plus has been extensively tested with varying current waveforms and frequencies ranging from 15 to 300 Hz. current Transformers (CTs) The 269 Plus receives its current input from user installed 5 A or 1 A secondary CTs. The CT ratio is programmed using the keypad. The maximum CT ratio is 1500:1 or 1500:5. High resistance ground fault sensing can be accommodated using a 50:0.025 A zero sequence CT. A 5 A...

269 Plus Motor Protection System with all of the setup and support tools needed for configuring and maintaining GE Multilin products. Launchpad allows configuring devices in real-time by communicating using serial, Ethernet, or modem connections, or offline by creating setting files to be sent to devices at a later time. Included in Launchpad is a document archiving and management system that ensures critical documentation is up-to-date and available when needed. Documents made available include: • Manuals • Application Notes • Guideform Specifications • Brochures • Wiring Diagrams • FAQs • Service...

269 Plus Motor Protection System Typical Wiring CONTROL POWER L N 269Plus TYPICAL WIRING : RTD10 CAN BE USED FOR AMBIENT SENSING ON THE 269 PLUS RELAY. CONTACTOR INTERPOSING RELAY. . THE STARTER AUXILIARY B CONTACT SHOULD BE CONNECTED ACROSS TERMINALS (44 & 45). THE APPROPRIATE SETPOINT ON P.5 MUST BE PROGRAMMED TO DETERMINE THE STATUS OF THE STARTER RESIDUAL GROUND CONNECTION 968565B2.cdr(ALTERNATE) 336 www.GEMultilin.com

269 Plus Motor Protection System Technical Specifications protection inputs ct burden due to connection of 269 PLuS RELAY PHASE currentINPuTS conversion: Calibrated RMS, sample 2 ms Range: 0.05 to 12 x phase CT primary amps setpoint Full scale: 12 x phase CT primary amps setpoint Accuracy: ±0.5% of full scale (0.05 to 2 x phase CT primary amps setpoint) ±1.0% of full scale (over 2 x phase CT primary amps setpoint) RTD INPuTS Sensor types: ground fault current input conversion: Calibrated RMS, sample time 2 ms Range: 0.1 to 1.0 x G/F CT primary amps setpoint (5 A secondary C.T.) 1.0...

269 Plus Motor Protection System 269 Plus motor management relay® Standard version Drawout version Phase CT 1 Ground CT (required for D/O only) 1 :5 2000:1 2 :5 :5 3 :1 2000:1 4 :1 :5 Relay fail safe code2 (required for D/O only) Trip Alarm Aux1 Aux 2 1 FS NFS NFS FS 2 NFS FS NFS FS 3 FS FS NFS FS 4 NFS NFS FS FS 5 FS NFS FS FS 6 NFS FS FS FS 7 FS FS FS FS 8 NFS NFS NFS FS 3 Relay contact arrangement (required for D/O only) Alarm Aux1 Aux2 1 N.O. N.O. N.O. 2 N.O. N.O. N.C. 3 N.O. N.C. N.O. 4 N.O. N.C. N.C. 5 N.C. N.O. N.O. 6 N.C. N.O. N.C. 7 N.C. N.C. N.O. 8 N.C. N.C. N.C. 100P 100 Ohm platinum...